Physics Unit 0 Crossword

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Across
  1. 4. Smallest unit of an element
  2. 5. Basic unit of life
  3. 6. The standard used for comparison in an experiment
  4. 7. Repeatability of a measurement
  5. 8. Where a graph crosses an axis
  6. 11. Principle that mass and energy are not lost
  7. 15. A small number showing repeated multiplication
  8. 16. A logical interpretation based on observations
  9. 17. A simplified representation of a system or process
  10. 20. Relationship involving an x² term
  11. 22. The process of assigning numbers to quantities
  12. 25. A statement showing two expressions are equal
  13. 27. Information gathered using the senses
  14. 28. A well-tested explanation supported by evidence
  15. 30. Job or role of a structure in biology
  16. 31. Rise over run, often representing a rate
Down
  1. 1. A homogeneous mixture of substances
  2. 2. Substance made of two or more elements
  3. 3. Substance with only one type of atom
  4. 7. Positively charged particle in the nucleus
  5. 9. A factor kept the same in an experiment
  6. 10. Relationship with constant slope
  7. 12. Group of interacting parts working together
  8. 13. Process that rearranges chemical bonds
  9. 14. Closeness of a measurement to the true value
  10. 15. Negatively charged particle orbiting the nucleus
  11. 18. Comparison of two quantities
  12. 19. A factor that can change in an experiment
  13. 21. Information collected during an investigation
  14. 23. A visual display of data relationships
  15. 24. Two or more atoms joined chemically
  16. 25. Capacity to do work, needed by all organisms
  17. 26. Force holding atoms together
  18. 29. Testable explanation for an observation